How To Fix MN780 - Tax code of supplier billing document item missing (internal error)

SAP Error Message - Details

• Message type: E = Error

• Message class: MN - Message class for subsequent settlement (Purchasing)

• Message number: 780

• Message text: Tax code of supplier billing document item missing (internal error)

What causes this issue?

When the system checked the supplier billing documents (settlement
documents) created via the general billing interface, it found am
supplier billing document item that did not have a tax code.

System Response

The system recognizes that data is inconsistent and does not perform the
function you require.

How to fix this error?

Contact your system administrator. This problem is probably due to a
program error.
The arrangement concerned is &V1&, the condition record concerned has
(internal) number &V2&.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MN780 - Tax code of supplier billing document item missing (internal error) ?

  The SAP error message MN780, which states "Tax code of supplier billing document item missing (internal error)," typically occurs when there is an issue with the tax code configuration or the data in the supplier billing document. Here are some potential causes, solutions, and related information for this error:
  Causes:
  
  Missing Tax Code: The tax code for the supplier billing document item is not specified or is missing in the document.
  Configuration Issues: There may be issues with the tax configuration in the system, such as missing tax codes in the relevant tax jurisdiction or incorrect settings in the tax calculation procedure.
  Data Entry Errors: The user may have inadvertently left the tax code field blank when creating or modifying the supplier billing document.
  Master Data Issues: The vendor master data may not have the necessary tax information configured, leading to the absence of a tax code in the billing document.
  Document Type Settings: The document type used for the supplier billing may not be configured to allow tax codes.
  
  Solutions:
  
  Check the Billing Document: Review the supplier billing document to ensure that the tax code is specified for each item. If it is missing, enter the appropriate tax code.
  Review Tax Configuration: Go to the SAP configuration settings (transaction code SPRO) and check the tax configuration. Ensure that the tax codes are correctly defined and assigned to the relevant tax jurisdiction.
  Vendor Master Data: Verify the vendor master data (transaction code XK03) to ensure that the tax information is correctly maintained. Check the tax classification and ensure that the appropriate tax codes are assigned.
  Document Type Settings: Check the settings for the document type used in the supplier billing (transaction code OMR6) to ensure that it is configured to allow tax codes.
  Consult SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional guidance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  FB60: Enter Incoming Invoice
  XK03: Display Vendor
  SPRO: SAP Reference IMG for configuration
  
  
  SAP Help Documentation: Refer to the official SAP Help documentation for detailed information on tax configuration and billing document processing.
  Testing: After making changes, test the process by creating a new supplier billing document to ensure that the error does not reoccur.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or reach out to SAP support for further assistance.